<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .article p {
            color: darkgray;
            font-size: 16px;
            line-height: 1.5;
            text-indent: 1em;
        }

        .article p:first-letter {
            font-size: 24px;
            font-weight: bold;
        }
    </style>
</head>

<body>
    <article class="article">
        <p>这是文章的第一段。</p>
        <p>这是文章的第二段。</p>
    </article>
</body>

</html>